Justinmind

Justinmind (was Prototyper Pro) allows you to design advanced mockups and run realistic simulations to capture and communicate functional specifications. Visualize user requirements without code. Simulate your interactive mockups, even with real data, before starting the project development. Demonstrate how the final application will behave to your customers, test users, and IT suppliers. Simulation technology helps you cut costs in your projects avoiding dramatic changes at the final stages of your projects.

Your customers and users can test and annotate a functional Web mockup worldwide with a Web browser, and communicate changes and new requirements with our Web annotation system.

Justinmind is available at a one-time cost of $455 or 'pay as you go' subscriptions.